Disconnected with data reset

Hi,
I had a full loot with OVER 6 divine worth from a single mapping.
You can probably check the log for more detailed information.
The game just disconnected with unexpected error and directed me to the login. Then when I logged back in, I was back in the hideout with an empty item tab. My map was used as well.
Can you please check this issue. This just happened.

Thanks,

Upon checking, even the exp is rolled back.
Seems like the server was rolled back to before I did the mapping.
However, I just attempted that map again, and it got me disconnected again when I entered the boss room.
I can't seem to proceed. It's one of the quests to defeat the strong boss.